It was discovered on 10 May 1934, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa.

[11] A rotational lightcurve of Mieke was obtained from photometric observations by Swedish astronomer Claes-Ingvar Lagerkvist analysis at Uppsala Observatory in March 1975.

[8] Published in March 2016, a modeled lightcurve, using the Lowell Photometric Database, gave a period of approximately 10.199 hours (U=n.a.).

[4][5][6][7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 21.40 kilometers based on an absolute magnitude of 11.1.

[3] This minor planet was named for Mieke Oort-Graadt van Roggen (1906–1993), wife of Dutch astronomy legend Jan Oort, who was director of the Leiden Observatory from 1945–1970.